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<div>To expand on this; it really sounds like where your trouble happens is during a re-invite event. If that is the case, it could very well be DNS as mentioned OR less likely (but plausible), a TCP timeout mismatch on a firewall.</div>
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<div id="AppleMailSignature">The codec logs and CCM trace will tell the tale for sure though.<br>
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Thanks,</div>
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<div id="AppleMailSignature">Ryan</div>
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On Aug 20, 2017, at 6:36 PM, Ryan Huff <<a href="mailto:ryanhuff@outlook.com">ryanhuff@outlook.com</a>> wrote:<br>
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<div>This might have to do with DNS. I would review all your internal/external SRV/A records for EXP/CUCM and your DNS zone in EXP.</div>
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<div id="AppleMailSignature">It sounds like the call is traversing expressway, but call manager may be having trouble finding the call leg via DNS, to connect the codec to.<br>
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Pulling CCM traces and debug logs on the codec for a failed call will tell you for sure.</div>
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Thanks,</div>
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<div id="AppleMailSignature">Ryan</div>
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On Aug 20, 2017, at 6:30 PM, Jonathan Charles <<a href="mailto:jonvoip@gmail.com">jonvoip@gmail.com</a>> wrote:<br>
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<div dir="ltr">Just a single VCSC and VCSE.... single CUCM 11.5... this is just a proof of concept...
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<div>Jonathan</div>
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<div class="gmail_quote">On Sun, Aug 20, 2017 at 5:27 PM, Ryan Huff <span dir="ltr">
<<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>></span> wrote:<br>
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Do you have EXP clusters or is this a single C/E pair?<br>
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Sent from my iPhone<br>
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> On Aug 20, 2017, at 6:26 PM, Jonathan Charles <<a href="mailto:jonvoip@gmail.com">jonvoip@gmail.com</a>> wrote:<br>
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> We have an SX80 connected to CUCM 11.5 and VCSC 8.10 to a VCSE 8.10...<br>
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> Outbound calls route to Webex, you see them enter the meeting and then after 4 seconds, they drop, the VCS E shows<br>
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> 481 Call/Transaction Does Not Exist<br>
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> Does anyone have any ideas?<br>
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> Jonathan<br>
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